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Feature Selection Based on Confidence Machine

lib:9db7c11e4ff191d5 (v1.0.0)

Authors: Chang Liu,Yi Xu
ArXiv: 1410.5473
Document:  PDF  DOI 
Abstract URL: http://arxiv.org/abs/1410.5473v2

In machine learning and pattern recognition, feature selection has been a hot topic in the literature. Unsupervised feature selection is challenging due to the loss of labels which would supply the related information.How to define an appropriate metric is the key for feature selection. We propose a filter method for unsupervised feature selection which is based on the Confidence Machine. Confidence Machine offers an estimation of confidence on a feature'reliability. In this paper, we provide the math model of Confidence Machine in the context of feature selection, which maximizes the relevance and minimizes the redundancy of the selected feature. We compare our method against classic feature selection methods Laplacian Score, Pearson Correlation and Principal Component Analysis on benchmark data sets. The experimental results demonstrate the efficiency and effectiveness of our method.

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